The device is a technical mean for active information protection for the top-secret category objects. The device provides protection of intercommunication and data transmitting systems that uses single-phase 220V with ground net as an information transmitting channel, from any type of interception devices by generating a wide-range digital noise. SEL SP-44 prevents from information leakage through the power-supply and ground lines providing a masking noise there in the frequency range of 0.01 - 300 MHz. It also suppresses wiretaps which are using these lines as a data-transmitting channel.

The filter is intended for protection against information leakage through power-supply lines 220 V. It is used for electromagnetic power-supply decoupling of electronic equipment from electrical network .

Noise Filter FSP-1F-10A-1,5, with reduced reactive current leakage, is designed to protect electronic devices and computer equipment from information leakage through electric circuits and ground power lines of 220 V, 50 Hz or DC up to 220 V, as well as providing protection from the impulsive and RF interference by increasing noise immunity in frequency range of 150 kHz to 2000 MHz. . Provides protection against voltage spikes on the network. Additionally it provides filtering of high-frequency interference in the grounding circuit load.

FSP-3F-15A is designed to protect electronic devices and computer equipment from information leakage through electric circuits and ground power lines of 220/380 V, 50 Hz, as well as providing protection from the impulsive and RF interference by increasing noise immunity in frequency range of 0.15 MHz to 1000 MHz. . Filter is manufactured with five-wire, with insulated neutral wire, with operating current up to 15A per phase. It can be used in DC lines with voltage up to 300 V with operating current up to 30A.

Network filter for protection from information leak on a single phase two line elektric power supply networks and supression of outer interferences through power-supply lines 220 V. 50 Hz with maximum working current 10 A in frequency diapason 0,15 MHz — 1000 MHz.

Network filter for protection of information from leakage through single phase doble wire power-supply lines and suppression of voltage of outer interferences of supplying network with maksimum working current of 40V.

Network filter for information protection from leakage through fourway (three phase) networks of power-supply with voltage 220/380 V freq. 50 Hz with maximul working current of 100A of responsible informatiosation objects and communication, also for supression of outer interferences in power-supply network in frequncy diapason 20 кHz – 1000 MHz.